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#
# Additional tests for wsrep_dirty_reads
#
--source include/galera_cluster.inc
--source include/have_innodb.inc
--let $galera_connection_name = node_3
--let $galera_server_number = 3
--source include/galera_connect.inc
# Save original auto_increment_offset values.
--let $node_1=node_1
--let $node_2=node_2
--let $node_3=node_3
--source ../galera/include/auto_increment_offset_save.inc
--connection node_1
CREATE TABLE t1 (f1 INTEGER);
INSERT INTO t1 VALUES (1);
--connection node_2
SET GLOBAL wsrep_provider_options='gmcast.isolate=1';
--connection node_1
--let $wait_condition = SELECT VARIABLE_VALUE = 2 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
--source include/wait_condition.inc
--connection node_2
SET SESSION wsrep_sync_wait = 0;
--let $wait_condition = SELECT VARIABLE_VALUE = 'non-Primary' FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_status';
--source include/wait_condition.inc
SET SESSION wsrep_dirty_reads = 1;
# Those statements should succeed
--error 0
SELECT f1 FROM t1;
--error 0
USE test;
--error 0
SHOW CREATE TABLE t1;
--error 0
LOCK TABLE t1 WRITE;
--error 0
UNLOCK TABLES;
--error 0
FLUSH TABLES WITH READ LOCK;
--error 0
UNLOCK TABLES;
--error 0
PREPARE stmt_select FROM 'SELECT f1 FROM t1';
--error 0
EXECUTE stmt_select;
--error 0
PREPARE stmt_update FROM 'UPDATE t1 SET f1 = f1 + f1';
# Mysqldump should succeed
SET GLOBAL wsrep_dirty_reads = 1;
SET GLOBAL wsrep_sync_wait = 0;
--error 0
--exec $MYSQL_DUMP -u root -S $NODE_MYSOCK_2 test >/dev/null
SET GLOBAL wsrep_dirty_reads = 0;
SET GLOBAL wsrep_sync_wait = 15;
# Those statements should fail
SET SESSION wsrep_dirty_reads = 1;
--error ER_UNKNOWN_COM_ERROR
INSERT INTO t1 SELECT * FROM t1;
--error ER_UNKNOWN_COM_ERROR
DELETE FROM t1;
--error ER_UNKNOWN_COM_ERROR
UPDATE t1 SET f1 = f1 + 1;
--error ER_UNKNOWN_COM_ERROR
DROP TABLE t1;
--error ER_UNKNOWN_COM_ERROR
EXECUTE stmt_update;
# With wsrep_dirty_reads = 0 , even SELECTS are not allowed
SET SESSION wsrep_dirty_reads = 0;
--error ER_UNKNOWN_COM_ERROR
SELECT * FROM t1;
--error ER_UNKNOWN_COM_ERROR
EXECUTE stmt_select;
# But reads from INFORMATION_SCHEMA are allowed
--error 0
SELECT COUNT(*) > 0 FROM INFORMATION_SCHEMA.PROCESSLIST;
# Restore cluster
SET GLOBAL wsrep_provider_options='gmcast.isolate=0';
--connection node_1
--let $wait_condition = SELECT VARIABLE_VALUE = 3 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
--source include/wait_condition.inc
--connection node_2
--let $wait_condition = SELECT VARIABLE_VALUE = 'Primary' FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_status';
--source include/wait_condition.inc
DROP TABLE t1;
# Restore original auto_increment_offset values.
--source ../galera/include/auto_increment_offset_restore.inc
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